The Way the Mage Faces Death is a Manga/Manhwa/Manhua in english language, REINCARNATION series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

"I want it to end now." Enthe, the archmage, lived a long 300 years, due to a curse that prevents her from dying until she rids the wicked dragon. Though she finally defeated the dragon, She opened her eyes not in the Netherworld, but in a dazzling noble's home. Worse yet, she opened her eyes in the body of a young lady who only knows magic from romance fantasy novels...